12320560154256 has 20 divisors (see below), whose sum is σ = 31828113731952. Its totient is φ = 4106853384736.

The previous prime is 12320560154213. The next prime is 12320560154263. The reversal of 12320560154256 is 65245106502321.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 128339168226 + ... + 128339168321.

Almost surely, 2^{12320560154256} is an apocalyptic number.

12320560154256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12320560154256 is an abundant number, since it is smaller than the sum of its proper divisors (19507553577696).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12320560154256 is a wasteful number, since it uses less digits than its factorization.

12320560154256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256678336558 (or 256678336552 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 42.

Adding to 12320560154256 its reverse (65245106502321), we get a palindrome (77565666656577).

The spelling of 12320560154256 in words is "twelve trillion, three hundred twenty billion, five hundred sixty million, one hundred fifty-four thousand, two hundred fifty-six".